Perfume compositions – Perfume compositions
Reexamination Certificate
2000-06-23
2002-11-12
Warden, Jill (Department: 1743)
Perfume compositions
Perfume compositions
C424S401000, C424S405000, C514S156000, C514S162000, C514S859000
Reexamination Certificate
active
06479456
ABSTRACT:
TECHNICAL FIELD AND PRIOR ART
The present invention relates to the perfumery and cosmetics industry. It relates more particularly to the perfuming of products intended for body care or hair care, as well as the perfuming of functional products.
It enables the preparation of perfumed products the perfume of which not only gives off a pleasant odour, but is also shown to increase, synergistically, the antimicrobial activity of the product in which it is incorporated.
Numerous conventional perfuming ingredients, such as essential oils or synthetic odoriferous substances, have been tested for their antimicrobial properties against various micro-organisms. Patent No. EP-A1-0 451 889, for example, contains a description of the state of the art as regards the bactericidal activity of perfuming ingredients of natural or synthetic origin. Patent No. EP-A1-0 433 132 describes a cosmetic composition containing essential oils having an activity other than a perfuming one, namely an antibacterial and/or antifungal activity. Furthermore, patent application WO 93/25185 describes a perfumed composition containing a cationic phospholipid, a perfuming base with antimicrobial action, and a fatty alcohol, the composition having an antimicrobial activity measured by the “direct spray” method. Finally, one should cite application WO 98/02044 which discloses compositions which have a disinfectant effect and are a combination of a surface-active agent, a chelating agent and an essential oil with antimicrobial action. In view of their antimicrobial properties, it is not surprising that the selection of perfuming ingredients having antimicrobial activity and the search for perfuming compositions possessing both olfactory properties and an effective antimicrobial activity should be the subject of numerous studies.
However, the antimicrobial activity of essential oils or odoriferous substances of both natural and synthetic origin is relatively weak and is insufficiently effective for controlling micro-organisms which are or may come into contact with humans.
In this context, it should be recalled that micro-organisms such as bacteria, yeasts and fungi are found, not only on the surfaces of practically any object, but also on human skin, where they cause unpleasant odours following the decomposition of sweat and other organic substances.
For such reasons, in addition to odoriferous substances of varied origin, numerous cleaning products and body-care products often also contain bactericides, considerably increasing the antimicrobial activity of a given product.
Now, because of the new consumer trends in favour of “natural” products, there is a great need for cleaning products and above all for body-care products that are free from bactericides or which contain them in smaller concentrations than the products currently on the market.
DESCRIPTION OF THE INVENTION
The present invention provides specifically a solution to the problem explained above. Consequently, the object of the invention is an antimicrobial perfuming composition, characterised in that said composition comprises
a perfuming ingredient having an antimicrobial activity of at least 80% as measured by the “agar surface coating test” (ASCT), by the “vapour phase test”, or by the “direct-spray method” (DSM); and
an active ingredient selected from the group consisting of grapefruit-pip extract, fumitory extract, fumaric acid, or an ester of fumaric or lactic acid.
According to several embodiments of the invention, the perfuming composition of the invention may contain one or a plurality of constituents selected from surfactants, emollients (softeners for hair and skin), antimicrobial agents, or yet 2-cyclododecylidene-1-ethanol, a compound belonging to the class of macrocyclic musks (origin: Firmenich SA, Geneva, Switzerland).
The active ingredient of the composition of the invention is typically a plant extract or a compound belonging to the active principles of plants. For example, fumaric acid is present in fumitory, being part of its active principle, as well as in many other plants. Among the esters of fumaric acid there should be mentioned particularly diethyl fumarate and digeranyl fumarate.
The perfuming ingredients suitable for use in the invention exhibit an antimicrobial activity of at least 80% as measured by the “agar surface coating test” (ASCT), by the “vapour phase test” (VPT), by the “direct-spray method” (DSM), or by a combination of these methods.
The invention also relates to a perfuming composition containing at least 40% by weight of perfuming ingredients each having an antimicrobial activity of at least 80% as measured by one of the above-mentioned methods and containing at least 0.1% of said active ingredient.
The present invention discloses original and effective test methods of selecting perfuming ingredients which have an antimicrobial action of at least 80%, over and above their perfuming activity, and also for testing the efficacy of this action in a perfuming composition or a perfumed product according to the present invention. Indeed we have discovered that a perfuming composition according to the invention containing a perfuming ingredient as defined above and a plant extract or a molecule corresponding to the active principle of the said plant inhibited the action of the above-mentioned micro-organisms.
By its anti-microbial and odoriferous properties, a perfuming composition prepared according to the invention is equally suitable for applications in fine perfumery and for the perfuming of functional products. Thus it may be used advantageously in the perfuming of various articles such as soaps, bath or shower gels, body deodorants and antiperspirants, shampoos and other hair-care products. It may also be used to perfume detergents or fabric softeners, air fresheners, cleaning products, detergent compositions or those intended for washing dishes or various surfaces, or yet toilet or WC blocks or cleaners for the WC. Surprisingly it has been found that the presence of a perfuming composition according to the invention increased the bactericidal and/or fungicidal action of various articles, detergents or fabric softeners, cleaning products, air fresheners in which they were incorporated.
The perfuming compositions of the invention may contain other constituents which have a positive or synergistic effect on the antimicrobial activity of their ingredients as cited above.
A class of optional constituents are the various kinds of surfactants. These agents are known to the person skilled in the art and include anionic, cationic, non-ionic or amphoteric surfactants, as well as phospholipids. Examples of preferred surfactants according to the invention include lauryl pyrrolidone (marketed under the name Surfadone® LP 300; origin: ISP, USA), DEA lauramide (marketed under the name Monoamide® 716; origin: Mona Ind., USA), glyceryl monolaurate, lauraminopropionic acid (marketed under the name Deriphat® 151C; origin: Henkel, Germany), o-cymen-5-ol (marketed under the name Biosol; origin: Osaka Kasei, Japan), PCA ethyl cocoyl arginate (marketed under the name CAE; origin: Ajinomoto, Japan), and octoxylglycerol (marketed under the name Sensiva SC 50; origin: Schülke & Mayr, Germany). Other preferred optional agents of the invention are the zwitterionic surfactants comprising a quaternary ammonium group, such as ricinolamidopropyl dimethylamine lactate (marketed under the name Mackalene® 216; origin: McIntyre, USA) or wheat germamidopropyl dimethylamine lactate (Mackalene® 716; origin: McIntyre, USA). Finally, it is also advantageous to use phospholipids, for example hydroxyethylcetyl dimonium phosphate (marketed under the name Luquivat® mono CP; origin: BASF, Germany), cocophosphatidyl propylene glycol dimonium chloride (phospholipid CDM) or cocoamidopropyl propylene glycol dimonium chloride phosphate (phospholipid PTC) (origin: Mona Ind. USA).
Another class of ingredients optionally present in the perfuming compositions of the invention are the emollients, substances which have a softening effect on the skin and hair. These ag
Cole Monique T.
Firmenich SA
Warden Jill
Winston & Strawn
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